Well captured.Snif.....I exchange mine with a Minolta in past...I do not remember why?MInolta 600 SI and since I used Minolta Lens.Before I got Asahi Pentax.V
In the sixties they did these wonderful multicoloured lens coatings. I only ever had the f1.8 55mm Zuiko on my OM10 but it still took many great pics. Yours looks like a wonderfully preserved piece of kit. V